Draft-producing device.



No. 851,289. PATENTED APR. 23, 1907 G. HORVATH.

DRAFT PRODUCING DEVICE.

APPLICATION FILED PBB. 9,1906.

WITNESSES way ATTORNEY UNITED STATES GEORGE HORVATH, OF BROOKLYN, NEWVYORK.

DRAFT-PRODUCING DEVICE.

Specification of Letters Patent.

ratentea April 23, 1907.

Application filed February 9,1906. Serial No. 300,253.

To all whom it may concern.

Be it known that I, GEORGE Honvarn, a subject of the Emperor ofAustria-Hungary, residing at Brooklyn, in the county of Kings and Stateof New York, have invented certain new and useful Improvements in Draft-Producing Devices, of which the following is a specification.

The present. invention pertains to a device for producing and increasingthe draft through stove pipes or for ventilating buildings, cars and thelike, and has for its object to provide an apparatus for attaining theabove results that is light, strong, durable and inexpensive tomanufacture.

My invention is illustrated in the accompanying drawings in whichsimilar reference letters denote corresponding parts and in which Figure1 is an elevation; Fig. 2 a longitudinal section on line 00-00 of Fig. 1Fig. 3 a cross section on line y y of Fig. 2; Fig. 4 a cross section online z z of Fig. 2; and Fig. 5 a top plan view of my apparatus.

WVith reference to the drawings my invention consists in the arrangementof a mouth piece a which may be of circular, rectangular or any othercross section and which is adapted to be mounted on a stove pipe, stackor within the wall of a building or the like. Bigidly secured to theinner surfaces of the mouth piece a and arranged crosswise to each otherare bars I), c in the centre of which an axle or red (Z is rigidlysecured. The latter extends longitudinally of the mouth piece andprojects therefrom outwards. By means of a ball bearing (2 the rodcarries a conical head f, the point of which is directed outwards. Thiscone has a wing 9 attached thereto, which will permit the wind to rotatethe same around the axle.

Attached to the inner surface of the cone f are bars h which are bent inZig-zag and extend outwards towards the mouth piece a. At their oppositeends these bars are bent towards the shaft (1 and are secured to a ring91 loosely borne on the latter. These bars serve for the attachment ofdeflecting wings or blades which have the shape of blunt cones arrangedwith their surfaces parallel to the surface of the head f and to eachother. These blades are also arranged at some small distance away fromeach other, leaving free spaces for the passage of the wind.

At one side the blades are cut away as at k and the edges at the cut outportions are bent outwards to form auxiliary wings I which will supportthe action of the wind in turning the head f and blades around the axled.

The aforesaid ball bearing of the outer conical head f upon the axle (Zconsists of a pivot m screwed into a solid part a of the cone and havingat its outwardly projecting end a semi-spherical excavation 0 to it on asmall ball 1) borne in a correspondingly shaped excavation q made in theouter end of the axle d. This ball bearing is enclosed in a sleeve 1suitably secured to the solid part a of the cone The mode of operationof this apparatus is as follows: The wind in striking the wing g andauxiliary wings Z of the blades 7' will turn the latter around the shaftd, and rising upon their conical surfaces will pass through the freespaces between the individual blades and the conical head and will exitat the cut out portions of the blades thereby creating a strong draft inthe stove pipe or a ventilation in the building.

It is understood that the di'fl'erent parts of the apparatus may bemodified without deviating from the spirit of my invention.

hat I claim and desire to secure by Letters Patent is:

1. A draft producing device comprising a mouth piece, a rod or axlerigidly fixed there in to extend centrally and longitudinally outwards,deflecting blades having the shape of blunt cones and arranged parallelto and slightly apart from each. other, said blades being revolublymounted on the said axle and each cut away at one side, and meanspermitting the wind to rotate the said wings around the axle,substantially and for the purpose as specified.

2. A draft producing device comprising a mouth piece, a rod or axlerigidly fixed therein to extend centrally and longitiulinally outwards,a conical head revolubly mounted thereon, a wing attached to the latter,bars bent in zig-zag and attached to the conical head, deflecting bladeshaving the shape of blunt cones and arranged parallel and slightly apartfrom each other and secured to said Zigzag bars, each of the deflectingblades being cut away at one side and the edges of said blades at thecut away portions being bent outwards to form auxiliary wings,substantially and for the urpose as specified.

3. A draft pro ucing device comprising a mouth piece, a rod rigidlyfixed therein to extend centrally and longitudinally outwards, a conicalhead, a ball bearing by means of which the said conical head isrevolubly mounted on the said rod, bars bent in zig-zag and attached tosaid conical head and extending outwards therefrom towards the mouthpiece, deflecting blades having the shape of blunt cones and attached tosaid zigzag bars slightly apart from each other,

10 each of said deflecting blades being cut away at one side and theedges thereof being bent outwards to form auxiliary wings, substan-GEORGE HORVATH.

Witnesses:

CLARENCE J IRVING, MAX D. ORDHANN.

